I have a Dell Dimension 8300 which was supplied with 2 x 256mb of memory. The two cards are installed in slots 1 and 3 of the four available slots. I am in the process of buying 2 x 512mb memory cards to upgrade the system. According to Crucial where I'm buying the memory they are exactly the same type as the ones already installed. i.e. they are DDR400 184pin PC3200
Question is should I just install these into empty slots 2 and 4?? Or because these are 512mb chips and therefore bigger than the ones already installed should I put the new memory into slots 1 and 3 and move the smaller ones into slots 2 and 4??
Does this not run in Dual channel mode?if so best to check manual,looking at your response I would think the 512Mb in slots 1 & 3 and the 256 in slots 2 & 4,then check on boot up that it is running in Dual channel mode.